UL Explosion Proof Flexible Coupling Adapter, 90 Degree Elbow Type, Two Male Adapter (1/2"~6")
UL Explosion Proof Flexible Coupling Adapter, 90 Degree Elbow Type, Two Male Adapter, KF-XG-M Series is designed to adopt different installation conditions and to offer more flexible options for mounting the explosion proof flexible coupling. Explosion proof flexible coupling adapters are made with stainless steel, brass or iron.
The overall structure is compact and dense. And have been certified with UL 1203 standard. Assembling the adapter firmly to explosion proof flexible coupling and explosion proof box to establish complete explosion proof system and achieve the function requirement of explosion proof.
Feature
-
Structure/Material：
- Standard：Stainless Steel 304 (1/2"~6")
- Option：Stainless Steel 316 (1/2"~6"), Brass (1/2"~2"), Iron (2-1/2"~6") -
Size：
1/2"~6" -
Compression Strength：
Max. 6000 psi (1/2", 3/4"), Max. 1200 psi (1"~2") -
Thread：
NPT, M -
RoHS Compliance:
Yes -
Certificate：
cULus (E490826) -
Standard：
ANSI/UL 1203 -
Suitable for use in Hazardous (Classified) Locations :
Size：1/2", 3/4"
--- Class I, Division 1, Groups A, B, C, D (Gases)
--- Class II, Division 1, Groups E, F, G (Dust)
--- Class III (Fibers)
Size：1", 1-1/4", 1-1/2", 2"
--- Class I, Division 1, Groups C, D (Gases)
--- Class II, Division 1, Groups E, F, G (Dust)
--- Class III (Fibers)
Size：2-1/2", 3", 4", 5", 6"
--- Class II, Division 1, Groups E, F, G (Dust)
--- Class III (Fibers)
Parameter
M Thread
| Nominal Conduit Size | M Thread | Part Number (SUS 304) | Package/Box (pcs) | Weight/Box (kg) | Certificate | Mated With |
|---|---|---|---|---|---|---|
| 1/2 | M20x1.5 | KF--XG1M11 | 6 | 3 |  |  |
| 3/4 | M25x1.5 | KF--XG2M11 | 6 | 4 | | |
| 1 | M32x1.5 | KF--XG3M11 | 6 | 6.1 | | |
| 1-1/4 | M40x1.5 | KF--XG4M11 | 2 | 2.7 | | |
| 1-1/2 | M50x1.5 | KF--XG5M11 | 2 | 3.3 | | |
| 2 | M63x1.5 | KF--XG6M11 | 2 | 4.9 | | |
| 2-1/2 | M75x1.5 | KF--XG7M11 | 1 | - | | |
| 3 | M90x2 | KF--XG8M11 | 1 | - | | |
| 4 | M110x2 | KF--XG9M11 | 1 | - | | |
| 5 | M140x2 | KF--XG10M11 | 1 | - | | |
| 6 | M164x2 | KF--XG11M11 | 1 | - | | |
NPT Thread
| Nominal Conduit Size | M Thread | Part Number (SUS 304) | Package/Box (pcs) | Weight/Box (kg) | Certificate | Mated With |
|---|---|---|---|---|---|---|
| 1/2 | 1/2" | KF--XG1M21 | 6 | 3 | | |
| 3/4 | 3/4" | KF--XG2M21 | 6 | 4 | | |
| 1 | 1" | KF--XG3M21 | 6 | 6.1 | | |
| 1-1/4 | 1-1/4" | KF--XG4M21 | 2 | 2.7 | | |
| 1-1/2 | 1-1/2" | KF--XG5M21 | 2 | 3.3 | | |
| 2 | 2" | KF--XG6M21 | 2 | 4.9 | | |
| 2-1/2 | 2-1/2" | KF--XG7M21 | 1 | - | | |
| 3 | 3" | KF--XG8M21 | 1 | - | | |
| 4 | 4" | KF--XG9M21 | 1 | - | | |
| 5 | 5" | KF--XG10M21 | 1 | - | | |
| 6 | 6" | KF--XG11M21 | 1 | - | | |
M Thread (Rotating) / NPT Thread (Fixed)
| Nominal Conduit Size | M/NPT Thread | Part Number (SUS 304) | Package/Box (pcs) | Weight/Box (kg) | Certificate | Mated With |
|---|---|---|---|---|---|---|
| 1/2 | M20 x NPT1/2 | KF--XG1M31 | 6 | 3 | | |
| 3/4 | M25 x NPT3/4 | KF--XG2M31 | 6 | 4 | | |
| 1 | M32 x NPT1 | KF--XG3M31 | 6 | 6.1 | | |
| 1-1/4 | M40 x NPT1-1/4 | KF--XG4M31 | 2 | 2.7 | | |
| 1-1/2 | M50 x NPT1-1/2 | KF--XG5M31 | 2 | 3.3 | | |
| 2 | M63 x NPT2 | KF--XG6M31 | 2 | 4.9 | | |
| 2-1/2 | M75 x NPT2-1/2 | KF--XG7M31 | 1 | - | | |
| 3 | M90 x NPT3 | KF--XG8M31 | 1 | - | | |
| 4 | M110 x NPT4 | KF--XG9M31 | 1 | - | | |
| 5 | M140 x NPT5 | KF--XG10M31 | 1 | - | | |
| 6 | M164 x NPT6 | KF--XG11M31 | 1 | - | | |
NPT Thread (Rotating) / M Thread (Fixed)
| Nominal Conduit Size | NPT/M Thread | Part Number (SUS 304) | Package/Box (pcs) | Weight/Box (kg) | Certificate | Mated With |
|---|---|---|---|---|---|---|
| 1/2 | NPT1/2 x M20 | KF--XG1M41 | 6 | 3 | | |
| 3/4 | NPT3/4 x M25 | KF--XG2M41 | 6 | 4 | | |
| 1 | NPT1 x M32 | KF--XG3M41 | 6 | 6.1 | | |
| 1-1/4 | NPT1-1/4 x M40 | KF--XG4M41 | 2 | 2.7 | | |
| 1-1/2 | NPT1-1/2 x M50 | KF--XG5M41 | 2 | 3.3 | | |
| 2 | NPT2 x M63 | KF--XG6M41 | 2 | 4.9 | | |
| 2-1/2 | NPT2-1/2 x M75 | KF--XG7M41 | 1 | - | | |
| 3 | NPT3 x M90 | KF--XG8M41 | 1 | - | | |
| 4 | NPT4 x M110 | KF--XG9M41 | 1 | - | | |
| 5 | NPT5 x M140 | KF--XG10M41 | 1 | - | | |
| 6 | NPT6 x M164 | KF--XG11M41 | 1 | - | | |
Frequently Asked Questions
What is the KF-XG-M series explosion proof flexible coupling?
The KF-XG-M series is a UL 1203 certified 90-degree elbow type explosion proof flexible coupling adapter with two male threads. Designed for hazardous (classified) locations, it provides flexible connection options between explosion proof flexible conduit and equipment in potentially explosive atmospheres while maintaining compact, dense construction.
What certifications does KF-XG-M hold?
KF-XG-M is certified to UL 1203 standard (Explosion-Proof and Dust-Ignition-Proof Electrical Equipment for Use in Division 1 and Division 2 Classified Locations). It is cULus recognized (File No. E490826), ensuring compliance with North American standards for explosion proof equipment in hazardous areas.
What classified locations is KF-XG-M suitable for?
KF-XG-M is suitable for Division 1 and Division 2 classified locations with multiple gas/dust group options: Class I (gases) Groups A, B, C, D; Class II (dusts) Groups E, F, G; and Class III (fibers). Size-specific classifications are detailed in product specifications for proper application matching.
What size range is available?
KF-XG-M series offers complete size coverage from 1/2" to 6" nominal conduit diameter (10 sizes total). Each size has corresponding thread options (M thread, NPT thread, or M/NPT combinations) with specific part numbers (KF-XG1M11 through KF-XG11M31) for different configurations.
What material options are available?
KF-XG-M is manufactured with three material options: Stainless Steel 304 (standard for 1/2"-6" sizes), Stainless Steel 316 (premium corrosion resistance for 1/2"-2"), Brass (for specific 1/2"-2" applications), and Iron (2-1/2"-6"). Material selection depends on environmental corrosion requirements and application demands.
What is the compression strength rating?
KF-XG-M has differentiated pressure ratings based on size: smaller sizes (1/2" and 3/4") are rated at maximum 6000 psi, while larger sizes (1" through 2") are rated at maximum 1200 psi. This pressure rating ensures reliable performance under the mechanical stresses common in hazardous area installations.
What thread options are available?
KF-XG-M offers three thread configurations: M thread only (metric), NPT thread only (National Pipe Taper), or M/NPT combinations (rotating M thread with fixed NPT thread). These options allow flexible installation to match various equipment and junction box thread types in hazardous locations.
What is the 90-degree elbow design advantage?
The 90-degree elbow configuration allows flexible installation routing around equipment and structures in space-constrained hazardous areas. This design eliminates the need for separate bends and fittings, reducing assembly complexity while maintaining the integrity of the explosion proof system.
What does "two male adapter" mean?
Two male adapter means both ends of the coupling have male threads. This configuration allows the coupling to screw directly into female threaded ports on explosion proof boxes and flexible conduit, creating a complete sealed connection without additional adapters or couplings needed.
What is the RoHS compliance status?
Yes, KF-XG-M is fully RoHS compliant, ensuring no hazardous substances (lead, mercury, cadmium, etc.) are used in manufacturing. This environmental compliance is important for global supply chains and installations in regulated industries like oil & gas and chemical processing.
What are typical packaging quantities?
Packaging quantities vary by size: smaller sizes (1/2"-1-1/4") come in 6 pieces per box (3-4kg), medium sizes (1-1/2"-2") in 2 pieces per box (3.3-4.9kg), and larger sizes (2-1/2"-6") in 1 piece per box. This bulk packaging supports efficient procurement for large hazardous area installations.
What applications is KF-XG-M designed for?
KF-XG-M is designed for oil and gas refineries, petrochemical plants, chemical processing facilities, gas distribution systems, coal mines, grain storage facilities, and any hazardous (classified) location requiring flexible explosion proof connections. The 90-degree elbow design is especially useful in equipment-dense areas.
What is the compact, dense structure advantage?
The compact and dense construction provides: enhanced durability in demanding industrial environments, reduced installation footprint in confined spaces, superior corrosion resistance, and improved reliability under vibration and mechanical stress. This robust design ensures long-term performance in the harshest hazardous locations.
How is the explosion proof system assembled?
The KF-XG-M adapter is firmly assembled between the explosion proof flexible coupling and the explosion proof equipment box. The two male threads screw securely into female threaded ports, creating a complete sealed assembly that establishes the explosion proof system and achieves required safety functions.
Why is stainless steel the standard material?
Stainless Steel 304 is the standard material because it provides excellent corrosion resistance in harsh chemical and petrochemical environments, maintains structural integrity at elevated temperatures, resists degradation from aggressive gases and vapors, and requires minimal maintenance. This ensures reliable operation in demanding hazardous locations.
When should Stainless Steel 316 be chosen?
Stainless Steel 316 (available for 1/2"-2" sizes) should be chosen for the most aggressive environments: coastal/marine applications, high chloride exposure, severe chemical environments, or when maximum long-term corrosion resistance is required. The enhanced molybdenum content provides superior resistance to pitting corrosion.
What maintenance is recommended?
Recommended maintenance includes: periodic visual inspection for damage or corrosion, verification that threads remain securely tightened, confirmation that the 90-degree routing is not overstressed, and ensuring the connection remains sealed. The robust stainless steel construction minimizes special maintenance requirements in normal operation.
How does KF-XG-M differ from other explosion proof couplings?
KF-XG-M's 90-degree elbow design with two male threads differentiates it for specific installation scenarios requiring directional flexibility. Unlike straight couplings, the elbow allows routing around obstacles, making it ideal for confined or complex equipment layouts in hazardous areas where space optimization is critical.
What documentation is provided with certification?
KF-XG-M comes with complete UL certification documentation including: UL Certificate, cULus Recognition (File No. E490826), technical drawings, classification charts for different gases/dusts/fibers, and detailed specifications. This documentation is essential for compliance verification and regulatory audits in classified locations.
Can custom configurations be designed?
Yes, engineering support is available for custom requirements including: special thread combinations, specific material selections for extreme corrosion resistance, custom elbow angles beyond 90 degrees, and specialized applications. Contact our explosion proof equipment specialists at info@flexible86.com or +86-563-6636999 for technical consultation.
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